On Condition Maintenance Based on the Impedance Measurement for Traction Batteries: Development and Industrial Implementation. - Pilar Munoz-Condes; Miguel Gomez-Parra; Carlos Sancho; María Antonia G. San Andres; Francisco Javier Gonzalez-Fernandez; Jose Carpio; Rafael Guirado (IEEE Trans. Ind. Electron., 2013)